蒸馏
工艺工程
剥离(纤维)
渗透汽化
资本成本
计算机科学
化学
色谱法
工程类
膜
机械工程
电气工程
渗透
生物化学
作者
Rebecca K. Toghiani,Priscilla Hill,Carlen Henington
摘要
In industry, chemical engineers are often enlisted to retrofit equipment and/or modify operations to achieve increased production capacity, increased product purity and/or improved energy efficiency.In undergraduate chemical engineering separations courses, the focus is on standalone separation processes such as distillation, gas absorption/stripping, and extraction.At some universities, membrane-based processes are included in the traditional separations course.It may often be advantageous to couple two separation processes to achieve a superior separation sequence in terms of operating costs and/or capital expenditures.Separation of an azeotropic mixture using distillation alone requires the introduction of an extractive solvent or an entrainer, either of which much be recovered and recycled.The benefits of hybridization in separations are realized for the separation of azeotropic mixtures using distillation and pervaporation.An instructional module on hybrid separations was developed for incorporation into the undergraduate separations course.
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